St. Martin, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Martin, a community in Harrison County, Mississippi.
Tonight
75°F
Mostly Clear
Mostly clear, with a low around 75. West wind around 0 mph.
7-day forecast for St. Martin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Mostly Clear | 0 mph | 1% |
| Sunday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph W | 25% |
| Sunday Night | 75°F | Mostly Clear | 0 to 5 mph W | 8% |
| Monday | 93°F | Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 30% |
| Monday Night | 75°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph NE | 30% |
| Tuesday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 23% |
| Tuesday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 23% |
| Wednesday | 93°F | Sunny | 0 to 10 mph NE | 14% |
| Wednesday Night | 73°F | Mostly Clear | 0 to 5 mph NE | 14% |
| Thursday | 92°F | Sunny | 5 to 10 mph E | 6% |
| Thursday Night | 71°F | Mostly Clear | 0 to 5 mph NE | 6% |
| Friday | 90°F | Sunny | 5 to 10 mph E | 5% |
| Friday Night | 70°F | Partly Cloudy | 5 mph NE | 5% |
| Saturday | 89°F | Sunny | 5 to 10 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov) for St. Martin (30.438, -88.862). Updated through the day.
Growing snapshot for St. Martin
Last spring frost
Feb 12
First fall frost
Dec 14
Growing season
301 days
Hardiness zone
9a
More local growing data for St. Martin: nearby ZIP 39540 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Biloxi, Ms (7.1 mi from St. Martin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.